Spindle mounting



SPINDLE MOUNTING Filed Oct. 3, 1936 if INVENTOR.

4- "4 flax/73' E/Yefiy I BY 9 ATTORNEYS.

Patented Feb. 24, 1942 SPINDLE MOUNTING Francis E; Kellen, Providence, R. L, as'signorfto Easton and=-Burnham Machine Company, a corporation of Rhode Island Applicationflctober s, 1936, Serial No. 103,357 r 8 Claims. (o1.3os 150) This invention relates to improvements in oil dampened spindle constructions; and has; for one of--its objects the provision of a spindle bearmg of simpleeand'improved construction which will be capable of reducing the objectionable vibrations of they spindle to progressively disperse and difiusethe same by-theaction of several separate. cushioning effects of the liquid, all of which together will practically suppressand nullifythe oscillatory or gyratory motion or the spindle and will result in a steady andsmooth runningspindle blade. v j

Another object of the invention; is the provision of 'aspindle construction which; will, present less resistance to the'running of the spindle, with: a consequent reduction in power consumption for driving the device, and to provide a simplified spindle construction in which the bearings for the blade are separate from eachother and located in different mountingmembers.

With these and other-objects in=view the invention consists of certain novel features ofwconstructionyas will be more" fully described, andparticularly pointed out in theappended claims.

In the accompanying drawing; v 1 1 1 Fig. l is; a vertical cross-sectional View of a spindle constructed in vention;

Fig. 2 is a detail transverse sectional view taken on theline 2-2 :of Fig.1;

Fig. 3 is a detail transverse sectional View taken onthe line 3'3-.of; Fig. 1; and r Fig. 4 is a detail transverse sectional view taken on thelineL-d of Fig. 1.

The common method ofconstructing spindles of this type, as heretofore'practiced, hasconsisted int rotatably mounting the spindle blade within a tubularbolster providedwi-th the requisite bearing surfaces for; supporting the bladelaterally therein, and the spindle blade is stepped atits lower end in a' bearing member carried by the lower end of the spindle bolster, the latter being located in an oil=well formed in the bolster casingin which a clearance space is provided-between the bolster and its casting 'suflicient to retain an oil film; therein which will exert a cushioning effeotuponthe vibrating bolster for dampening harmful vibrations ofthe spindle blade caused by an unbalanced bobbin. However, all of these prior, devices have not proven wholly satisfactoryinactual use; due to the fact that while the filmofoil disposed between the outer wall of-the bolster and the casing side serves to greatlyreduce the injurious effects; set upby the vibration of the blade when in motion accordance with this ina yet they are not entirely absorbed or eliminated but still persist to such an extent as to interfere seriously with the manufacturing operations .because the speed must be kept down in order to avoid frequent interruptions in thejoperationof.

the machine arising .by breakage. of the. yarn or other product; and-in order to overcome. these diificulties, I provide a spindle mountingcomprising two ormore.concentric-tubular bolsters, fitted one within. another around the spindleand located in the bolster casing, with a film of oil between each of. the bolsters and between the outermost bolster and the casing for distributing,

.- de'scription. ofthe present the. dampeningjor absorbing effect among the several-"oil films whichconjointly actto completely cushion the vibrations I have further prjovideda. spindle. constructionin. which the blade is rotatably mounted. on two bearings, one consisting oflan upper bearing sleeve. located ini'the, upper end portion of one bolster to laterallysupporttheblade,v.while the other bearing member] consists of av step which is. secured in thelower end portion .of. another bolster; amine following is. a ,more detailed embodiment. of this preferred means byresults.- are accominvention, illustrating the which these advantageous plished.

With reference to. the drawing; whereinior the. purpose, of illustration is shown one 'specific embodiment of. my invention, the numeral 10 designates. a bolster casingjhaving a flanged. head member IZadaPted tobe seated upon. the upper face ofa spindle rail, not shown, of a spinning or twistingv frame. ,Depending. below the flange]: is atubular body portion or stem l3 which, isclosed at its bottom to iormanoil reservoir. v The stem I3 is suitably. provided with screw threads as indicated at I 4 for receiving. a clamping nut; not shown, to secure the bolster case .to the spindle rail of the machine. Up.- standing from thehead flange I 2 of the bolster casing is the usual. upright oil-conveying spout arm l6 which is of well known construction and through which oil is poured and conducted. to

' supplydubricant to the: reservoir in the lower portion of the casing stem I 3.. The upper end of the spout. l6 is closed by a hinged cover, I! havinga laterally extending projection l8 which forms a detent positioned just above the top of the driving whirl IS on the rotatable. spindle 20 for retaining the latter against. displacement from thebolster case. The spindle 20 may be of the usual construction having tapering end portions and an intermediate cylindrical section.

of :the spindle, and- The bolster casing l also includes a short tubular extension 2| which projects upwardly from the head l2 and is in substantial alignment with the stem l3 to form the central longitudinal bore 22 of the bolster case. This extension 2| is located within an enlarged recess 23 of generally cylindrical shape and formed in the underside of the whirl l9, as is a well known construction in the art, so that the exterior part of the extension 2| is thus surrounded by the encircling and depending sleeve portions of the whirl sides. The whirl I9 is suitably secured to the spindle blade 20, as by a press fitting engagement therewith, and a grooved rim portion 25 is provided on the whirl to receive the usual driving belt or band, not shown, for driving the spindle. All the structure as thus described is of old and well known construction and may obviously be varied according to standard types of spinning spindle constructions to which my invention is to be applied.

To provide a fluid cushioning mounting for the spindle blade in the casing I0, I have provided an improved spindle dampening construction which, in the present embodiment of the invention, comprises a pair of concentric tubular bolsters 26 and 21 arranged in a nested formation one within the other in the bore 22 of the casing |0, ;the spindle blade 29 being entirely supported for 'r'otation'by two spaced bearing surfaces, 28 and'2 9'respectively, one of which is provided by each of the bolsters. Thus, the spindle blade is unsupported inthe stretch between the two bearings. As illustrated in Fig. 1, the bolsters 26 and 21 are of unequal length, the latter being the longer and extending upwardly along the bore 22 to a point close to its upper end, while the bolster ztris located withinthe lower portion of the bolster 21 and extends upwardly along the bore thereof so that its upper end is in close, proximity to the flanged head |2 of the bolster case, and thelower portions of the telescopically arranged bolsters are located in the oil reservoir in the stem I3 of the bolster casing. The bolsters 26 and 21 are formed of such sizes that the inner bolster 25 will fit loosely within the outer bolster 21, and likewise the latter is loosely positioned in the bore 22 of the casing l0, thus providing a pair of longitudinally extending cylindrical clearance spaces 30 and 3| which each receive a film of liquid in said reservoir to provide a series of progressive cushioning or dampening layers or columns of liquid alternately interposed between thev respective bolsters and the casing for fractionally distributing and effecting a cushioning action upon the lower end of the spindle during vibration, oscillation or gyration of the same. The construction, thus described, thus permits separate yielding movement of one bolster relative to the other and the casing in response to the'oscillatory or gyratory motion of the spindle.

In the construction shown in Fig. 1 the bearings for supporting the spindle blade are shown, as consisting of a step 28 formed of a glass hard metal, preferably of hardened steel, and havin in'its top portion a recess 32 for mounting the tapered lower end of the spindle blade. The step 28 is suitably and tightly secured in the lower end of the bolster 26, and a pin 33 is fastened in the bearing 23 and passes diametrically through the wall of the bolster 26 and into an enlarged opening '34 formed in the wall of the bolster 21. An opening .35 extends diametrically through the step 28 and perforates the walls of the bolsters in order to provide a transverse duct through which the oil contained in the reservoir has access to the lower bearing for the spindle. By reason of this construction, it is possible for one to withdraw both bolsters together as a unit from the bore of the casing l0, besides fixedly connecting both bolsters and the step bearing to prevent relative turning of the parts during running of the spindle. A suitable lug 3B projecting from the side of the bolster 21, adjacent to its upper end fits into a longitudinal groove 3! formed in the inner peripheral surface of the extension 2| for retaining the outer bolster 21 1 against rotation with the spindle.

The upper bearing 29 which serves to support the blade laterally consists of a sleeve which may be composed of a glass hard metal, preferably of hardened steel, and is tightly secured in the top end portion of the bore of the outer bolster 21 for engaging the usual cylindrical section of the spindle blade. If desired, it is feasible to utilize for the upper and lower bearing 29 and 28 respectively, the special bearing constructions made of chrome tool steel having substantially glass hard bearing surfaces, as more fully disclosed and described in my prior Patent No. 2,041,934, granted May 26, 1936, to which reference may be had for a more detailed description.

Formed in the side surface of the upper bearing 29 is a longitudinal groove 38 which communicates with the space below the bearing 29 to permit the oil which is forced up the clearance space 3| by the pumping action of the vibrating spindle and bolsters and be discharged into the space in the upper end of the extension 2| to flow downwardly into the space in the lower portion of the casing l0 surrounding the spindle blade.

In the operation of the spindle, the cushioning or dampening effect is obtained by reason of the fact that the clearance spaces 30 and 3|, which are filled with oil, provide a series of oil films which supplement one another to graduate and progressively distribute and suppress the vibrations of the spindle which tends to oscillate about the middle of bearing 29 as a pivot center so that they become progressively decreased in effect by the several films and finally reduced to a minimum by the combined effect of both oil films as to be practically absorbed by the cushioning effect. This belt assists in holding the whirl portion of the spindle rigid against movement and contains within it a point which is the center of such oscillatory movement which exists.

The foregoing description is directed solely towards the construction illustrated, but I desire it to be understood that I reserve the privilege of resorting to all the mechanical changes to which the device is susceptible, the invention being defined and limited only by the terms of the appended claims.

I claim:

1. In combination, a spindle blade, a bolster casing, a plurality of bolsters in said casing, a pair of spaced bearing members for said blade, one of said bearings being secured in the upper part of the outer bolster and the other bearing being secured at the lower portion of the inner bolster, said bolsters being fitted one within another in spaced relation and located in said casing spaced therefrom each movable relative thereto and with their lower ends resting on the inner bottom surface of said bolster case.

2. In combination, a spindle blade, a bolster casing having an oil reservoir, a plurality of bolsters in said casing, a pair of spaced bearing of said bolster casing,

' 2,274,146 members for said blade, one of said bearings being secured in the upper part of the outer bolster and the other bearing being secured in the lower portion of the inner bolster, said bolsters being fitted one within another and movable relcasing and with their lower ends resting on the inner bottom surface of said bolster case.

3. In combination, a spindle blade, a bolster casing having an oil reservoir, at least two bolsters in said casing, members for said blade, one of said bearings being secured in the upper part of the outer bolster ing and with their inner bottom surface 4. In combination, casing having an oil of said bolster case. a spindle blade, a bolster said bolster resting on the inner bottomsurface spindle blade, a bolster casing having an oil reservoir, a pair of loosely telescopically arranged bolsters loosely mounted in said casing, spaced bearings for said blade, said bolsters being of unequal length and having their lower end portions located in said reservoir,

5. In combination, a

blade secured therein and the blade being stepped on the lower bearing which is secured in the lower end .of the shorter bolster.

a pair of spaced bearing 6. In combination, a spindle blade, a bolster case, a bolster loosely mounted in said bolster case, a second bolster shorter than the first bolster loosely mounted the lower end of each of said bolsters being coex tensive at the bottom and resting on the inner bottom surface of said bolster case, and bearings for said spindle blade within said bolsters, one of said bearings being within the said first bolster jacent to the upper bearing, the walls of said bolsters being spaced from each other and from the inner walls of said bolster casing throughout their entire length. I

7. In combination, a spindle blade, a, bolster case, a plurality of bolsters loosely mounted within said bolster case and loosely mounted one within another, said bolsters being of unequal length with the lower ends of said bolsters being coextensive at the bottom and resting on the inner bottom surface of said bolster case, and bearings for said spindle blade between said spindle blade and bolsters, the upper of said bearings being within one of the bolsters and above the upper end of another of saidbolsters said bearings providing a rockable mounting for the blade about an axis adjacent to the upper bearing, the

casing throughout their entire length.

8. In combination, a spindle blade, a bolster casing, a bolster loosely mounted in said bolster case, the inner diameter of said casing being subameter of said second bolster being substantially uniform throughout its length to provide a substantially uniform spacing of said bolsters, the

surface of said bolster spindle blade within case, and bearings for the said bolsters, one of said other bearing being secured the inner bolster. FRANCIS E. KELLEY.

within said first bolster, 

